import 'package:get_it/get_it.dart';
import 'package:trainhub_flutter/data/database/app_database.dart';
import 'package:trainhub_flutter/data/database/daos/exercise_dao.dart';
import 'package:trainhub_flutter/data/database/daos/training_plan_dao.dart';
import 'package:trainhub_flutter/data/database/daos/program_dao.dart';
import 'package:trainhub_flutter/data/database/daos/analysis_dao.dart';
import 'package:trainhub_flutter/data/database/daos/chat_dao.dart';
import 'package:trainhub_flutter/domain/repositories/exercise_repository.dart';
import 'package:trainhub_flutter/domain/repositories/training_plan_repository.dart';
import 'package:trainhub_flutter/domain/repositories/program_repository.dart';
import 'package:trainhub_flutter/domain/repositories/analysis_repository.dart';
import 'package:trainhub_flutter/domain/repositories/chat_repository.dart';
import 'package:trainhub_flutter/data/repositories/exercise_repository_impl.dart';
import 'package:trainhub_flutter/data/repositories/training_plan_repository_impl.dart';
import 'package:trainhub_flutter/data/repositories/program_repository_impl.dart';
import 'package:trainhub_flutter/data/repositories/analysis_repository_impl.dart';
import 'package:trainhub_flutter/data/repositories/chat_repository_impl.dart';
import 'package:trainhub_flutter/data/repositories/note_repository_impl.dart';
import 'package:trainhub_flutter/domain/repositories/note_repository.dart';
import 'package:trainhub_flutter/domain/services/ai_process_manager.dart';
import 'package:trainhub_flutter/domain/services/embedding_service.dart';
import 'package:trainhub_flutter/data/database/daos/knowledge_chunk_dao.dart';

final GetIt getIt = GetIt.instance;

void init() {
  // AI Process Manager — must be registered before anything else so that the
  // window lifecycle hook can always find it via getIt<AiProcessManager>().
  getIt.registerSingleton<AiProcessManager>(AiProcessManager());

  // Database
  getIt.registerSingleton<AppDatabase>(AppDatabase());

  // DAOs
  getIt.registerSingleton<ExerciseDao>(ExerciseDao(getIt<AppDatabase>()));
  getIt.registerSingleton<TrainingPlanDao>(
    TrainingPlanDao(getIt<AppDatabase>()),
  );
  getIt.registerSingleton<ProgramDao>(ProgramDao(getIt<AppDatabase>()));
  getIt.registerSingleton<AnalysisDao>(AnalysisDao(getIt<AppDatabase>()));
  getIt.registerSingleton<ChatDao>(ChatDao(getIt<AppDatabase>()));
  getIt.registerSingleton<KnowledgeChunkDao>(
    KnowledgeChunkDao(getIt<AppDatabase>()),
  );

  // Services
  getIt.registerSingleton<EmbeddingService>(EmbeddingService());

  // Repositories
  getIt.registerLazySingleton<ExerciseRepository>(
    () => ExerciseRepositoryImpl(getIt<ExerciseDao>()),
  );
  getIt.registerLazySingleton<TrainingPlanRepository>(
    () => TrainingPlanRepositoryImpl(getIt<TrainingPlanDao>()),
  );
  getIt.registerLazySingleton<ProgramRepository>(
    () => ProgramRepositoryImpl(getIt<ProgramDao>()),
  );
  getIt.registerLazySingleton<AnalysisRepository>(
    () => AnalysisRepositoryImpl(getIt<AnalysisDao>()),
  );
  getIt.registerLazySingleton<ChatRepository>(
    () => ChatRepositoryImpl(getIt<ChatDao>()),
  );
  getIt.registerLazySingleton<NoteRepository>(
    () => NoteRepositoryImpl(
      getIt<KnowledgeChunkDao>(),
      getIt<EmbeddingService>(),
    ),
  );
}